Granted Patent
Utility
US 6,748,914 · App. 10/113,466
Refillable metering valve for hydraulic valve lifters
Inventors:
Mark J. Spath, Carl R. Kangas
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Mar 29, 2002
Inventors
Mark J. Spath
Carl R. Kangas
Assignee (at issue)
Delphi Technologies
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.